3E4U:
reference: Structure of the wild-type human BCL6 POZ domain., Stead MA, Rosbrook GO, Hadden JM, Trinh CH, Carr SB, Wright SC, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2008 Dec 1;64(Pt 12):1101-4., Epub 2008 Nov 28. PMID: 19052359

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